Character encoding tables

With the advent of Unicode, legacy character encodings have mostly lost
their raison d’être, but they are still in widespread use and are
clearly not going to disappear any time soon.

This site now provides PDF charts for a number of 8-bit encodings, as well as tests
and information on browser support and links to more official and
authoritative sources. The character sets are grouped as follows:

There is a WHATWG Wiki page
devoted to encoding support in browsers with a focus on labels (MIME charsets),
whereas this page is more about the encoding vectors used to map from
bytes (octets) to Unicode characters.

Unicode 6.0 Book

Those who would like the Unicode 6.0 Specification on paper might find this page useful.